در مورد اتصال اسپیکر هم این تکست رو بخون :
Baby pickup high sensitivity, is not suitable for particularly large occasions in volume, not suitable to speak directly into the microphone close to his mouth, if you do need to speak in front of the mouth, mouth and microphone please keep a distance of about one meter! So at the mobile phone speaker or microphone is not a TV or stereo, if you need to monitor a large volume of case please contact the owner!